77910-11 Mobile Phone IC
High-Quality Mobile Phone IC
The 77910-11 Mobile Phone IC is engineered to enhance your device’s performance effortlessly. This small yet powerful component ensures optimal functionality, delivering seamless and efficient operation for your mobile devices. 77910-11 Mobile Phone IC
Unmatched Reliability and Compatibility
Designed for compatibility with a wide range of mobile phone brands, the 77910-11 IC guarantees robust and long-lasting performance. Its high-quality construction ensures stability, making it the perfect choice for repairs or tech upgrades. 77910-11 Mobile Phone IC
Enhanced Efficiency for Everyday Use
With advanced technology incorporated, the 77910-11 Mobile Phone IC offers not only excellent performance but also improved energy efficiency. It’s an ideal solution for a trouble-free and dependable mobile experience. 77910-11 Mobile Phone IC
The SKY77910-11 is a high-performance Transmit/Receive Front-End Module (FEM) developed by Skyworks Solutions. It is primarily used in 2G, 3G, and 4G (LTE) mobile handsets to manage the radio frequency (RF) signals between the antenna and the phone’s internal processor. 77910-11 Mobile Phone IC
As a “SkyLiTE™” family component, it is designed for emerging markets and mid-range devices (like the Meizu MX5) where a compact, highly integrated solution is required to support multiple frequency bands.
Technical Specifications: SKY77910-11
| Feature | Specification |
| Manufacturer | Skyworks Solutions, Inc. |
| Model Number | SKY77910-11 (77910-11) |
| Product Type | RF Transmit / Receive Front-End Module (FEM) |
| Supported Standards | GSM, GPRS, EDGE, TD-SCDMA, TDD LTE (Band 39) |
| Frequency Bands | Quad-Band GSM (850/900/1800/1900 MHz) |
| TRx Switch Ports | 8 Linear Transmit/Receive Switch Ports |
| Control Interface | MIPI® RFFE (Radio Frequency Front End) |
| Input Power Range | -1 dBm to +6 dBm (GMSK) |
| Internal Matching | 50 Ω (Input/Output internally matched) |
| Package Dimensions | 5.5 mm x 5.3 mm x 0.71 mm (approx. 0.8 mm max) |
| Package Type | MCM (Multi-Chip Module), 38-pad configuration |
| Efficiency (PA) | ~40% for GSM850/900; ~36% for DCS1800/PCS1900 |
Key Functional Components
The SKY77910-11 is not just a single chip but a module that integrates several critical RF functions into one small package.
1. Power Amplifier (PA) Blocks
The module contains two main Heterojunction Bipolar Transistor (HBT) PA blocks:
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Low Band (LB): Optimized for GSM850 and GSM900 bands.
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High Band (HB): Supports DCS1800, PCS1900, TD-SCDMA (Bands 34/39), and TDD LTE Band 39.
2. CMOS Controller
A custom low-current CMOS controller manages the MIPI RFFE logic. It translates digital instructions from the phone’s CPU to switch between different bands and modes, and it handles the power ramping ($V_{RAMP}$) to ensure the signal doesn’t “splatter” into adjacent channels.
3. RF Switch & Coupler
The integrated high-linearity switch routes signals to and from the antenna via 8 TRx ports. It also features an integrated directional coupler, which monitors the output power to help the phone maintain a stable connection without wasting battery.
Major Features & Benefits
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WiFi Coexistence: Includes an integrated noise suppression notch filter. This prevents the phone’s cellular signal from interfering with its own WiFi/Bluetooth signals, which often operate on nearby frequencies.
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Ruggedness: Features built-in ESD protection (compliant with IEC standards) and current limiting to protect the internal circuitry from voltage spikes or antenna mismatches.
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Space Saving: Because the input/output ports are matched to 50 ohms and the coupler is built-in, phone manufacturers need fewer external capacitors and inductors on the PCB.
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Battery Optimization: The module is designed with extremely low leakage current, which directly extends the “standby time” of the mobile device.
Application and Compatibility
The 77910-11 is widely known in the mobile repair industry as a critical “Network IC” or “PA IC.” It is a common replacement part for devices experiencing signal loss, “No Service” errors, or weak network reception.
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Primary Device: Meizu MX5.
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Other Uses: Various mid-range Android smartphones utilizing MediaTek or entry-level Qualcomm chipsets from the 2015–2018 era.
Note for Technicians: When replacing this IC, professionals usually recommend using a hot air rework station set to approximately 330°C to 350°C. Since it is a 38-pad MCM package, precise alignment of the solder balls is critical to avoid shorting the MIPI control lines.
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